baber/WOPTO huggingface dataset:
Patent CA-2059884-C (CA)
Title: Process for the preparation of 2-chloro and 2,6-dichloroanilines
Inventor: MCKENDRY LENNON H
IPC: C07C237/42
Filed: 1992-01-23
Granted: 1997-10-14
Abstract: 2-Chloro and 2,6-dichloroanilines, optionally substituted in the 3-, 5-, and/or 6-position are prepared from the corresponding anilides by selective bromination, chlorination, reduction and hydrolysis. The selectivity of the process for introducing chlorines ortho to the amino group is very high.
Patent CA-2062032-C (CA)
Inventor: BOSKAMP JELLES V
IPC: C11D3/12
Filed: 1992-02-28
Granted: 1998-06-09
Abstract: A detergent builder composition comprises maximum aluminium zeolite P and a polycarboxylate polymer, preferably an acrylic/maleic copolymer.   The builder composition may be used in detergent compositions suitable for fabric washing. Such compositions show superior detergency compared with compositions containing zeolite A and polymer.
Patent CA-2071927-C (CA)
Title: Coil assemblies
Inventor: SALVAGE RICHARD JAMES
IPC: H01F27/02
Filed: 1990-11-26
Granted: 1999-08-03
Abstract: This invention relates to coil assemblies and in particular, but not exclusively, to such assemblies for acoustic transducers. Thus a transducer (10) includes a case (11) in which is located a coil (16) mounted on a flexi-circuit, which locates the coil (16) for its assembly handling and which allows various configurations within the case (11). A method of winding the coil (16) and mounting it on the carrier (17) is also described.
Patent CA-2079008-C (CA)
Title: Device for injecting a fluid or inserting an object beneath the skin of an animal
Inventor: ALEXANDER NICHOLAS JOHN
IPC: A61D7/00
Filed: 1991-03-27
Granted: 2003-04-29
Abstract: A hand held device for injecting a fluid (such as a vaccine) or an object (such as a transponder) beneath the skin of an animal, the device comprising a mounting (2) for receiving a conventional hypodermic syringe (5, 6, 7), a weight (7) (which may be part of the plunger fitted within the syringe) for acting on the plunger (7) of the syringe and a slapping plate (3), being arranged so that when the device is swung into contact with an animal so the needle (6) of the hypodermic syringe pierces the animal's skin and the device is brought to a sudden halt as the plate (3) slaps against the animal, the momentum of the weight (7) acts to push the plunger (7) into the syringe and so propels the fluid or object held therein into the animal.
Patent CA-2085628-C (CA)
Title: Process for preparation of purified xanthan gum
Inventor: MUROFUSHI KANJI
IPC: C08B37/00
Filed: 1992-12-17
Granted: 2000-05-09
Abstract: The process comprises heat-treating a xanthan gum fermented broth, and consecutively treating the broth first with alkaline protease and then with lysozyme or in reverse order, and thereafter recovering xanthan gum from the treated broth. A clear aqueous solution of xanthan gum may be obtained without complex procedures.
Patent CA-2087972-C (CA)
Title: Extraction and concentration of a gas component
Inventor: KEEFER BOWIE GORDON
IPC: F02G1/043
Filed: 1991-07-23
Granted: 2000-01-04
Abstract: Pressure swing adsorption separation of a gas mixture, containing a first component and also a second component which may be at low or trace concentrations, is performed to extract the second component from the gas mixture so that a first product stream containing the first component may be substantially purified with respect to the second component, while the second component is concentrated to a high degree in a second product stream. Gas mixtures containing three components may also be separated. The apparatus of the invention performs the separation within a single working space.
Patent CA-2089810-C (CA)
Inventor: SASTRI SURI A
IPC: A61B17/32
Filed: 1991-08-13
Granted: 1998-12-29
Abstract: A surgical instrument for use in endoscopic surgical procedures having an outer elongated tubular member and a concentric inner elongated tubular member positioned in and rotatable within the outer tubular member having an opening in its distal end and the inner tubular member having a cutting edge positioned at its distal end so as to coincide with and be exposable through the opening in the outer tubular member to effect the cutting of tissue and the removal of tissue by aspiration, a coating of a metal from the group consisting of silver and gold extending substantially around the circumferential surface of at least one of the outer surface of the inner tubular member or the inner surface of the outer tubular member, the metallic coating from the group consisting of silver and gold being of such thickness and extending a sufficient distance along the axial length of the member.
Patent CA-2093666-C (CA)
Title: Orally administered solvent-free pharmaceutical preparation with delayed active-substance release, and a method of preparing the preparation
Inventor: EMSCHERMANN BERNHARD
IPC: A61K47/32
Filed: 1991-10-07
Granted: 1998-05-19
Abstract: The pharmaceutical preparation disclosed comprises a solvent-free chilled-melt granular material containing at least one fusible active ingredient and at least one fusible auxiliary. The preparation can be used for all the forms of medication claimed and in the therapy of illnesses.
Patent CA-2097449-C (CA)
Inventor: SAKURAGI SATOSI
IPC: H04M19/08
Filed: 1993-06-01
Granted: 1998-09-15
Abstract: In the described telephone line power utility circuit, in which a direct-current power supplied from a telephone line-side is utilized as a power source for a line terminal device by a DC-DC converter, a CPU controls, over obtaining a maximum input direct-current resistance of a DC-DC converter in a range of a predetermined standard satisfied by a direct-current resistance of the line terminal device, as viewed from the telephone line-side; the switching of the taps of a primary side winding of a transformer of the DC-DC converter for obtaining the maximum input direct-current resistance of the DC-DC converter; the duty ratio of a primary side switching element for obtaining the maximum input direct-current resistance of the DC-DC converter. Accordingly, the direct-current power supplied through the telephone line can very effectively be utilized as a power source for the line terminal device.
Patent CA-2098269-C (CA)
Title: Dispositif et methode de pompage d'un liquide visqueux comportant l'injection d'un produit fluidifiant, application aux puits horizontaux
Inventor: CHOLET HENRI
IPC: E21B43/12
Filed: 1993-06-11
Granted: 2004-04-27
Abstract: La présente invention concerne un dispositif de pompage d'un fluide de fort e viscosité comportant une pompe reliée à l'extrémité inférieure d'une colonne tubulaire au fond d'un puits. Le dispositif comporte un dispositif de séparation du gaz libre et un moyen d'injection d'un produit fluidifiant. L'injection se fait sensiblement au niveau des orifices d'admission du fluide, à partir d'un tube remontant jusqu'en surface. L'invention concerne également une méthode de pompage dans laquelle on injecte un produit fluidifiant dans le fluide visqueux à l'admission de la pompe.
Patent CA-2098339-C (CA)
Inventor: FREBER DONALD E
IPC: F23D14/46
Filed: 1993-06-14
Granted: 1996-12-17
Abstract: The burner construction having a bottom pan and a cover is divided into two sections which are independently active when a gas fuel is supplied by independent venturi tubes.  The tubes and bottom pans are formed with cam-locking elements which require a twisting motion in the receiving apertures in which the twisting of the tubes engages the cam-locking elements which pulls a shoulder on the tubes into a tight sealing contact against the pan thereby avoiding the need for tools or the use of gasket materials to form the seal.
Patent CA-2098688-C (CA)
Inventor: ODA KIYOSHI
IPC: A44B19/38
Filed: 1993-06-17
Granted: 1996-09-03
Abstract: A slide fastener comprises a pair of stringer tapes, a pair of rows of interdigitating fastener elements mounted on the inner longitudinal marginal edges of the respective stringer tapes, and a slider for reciprocally movable along the fastener element rows to bring the fastener element rows into or out of interdigitating engagement with each other and a bottom stop mounted on the lower end of the element rows to stop the descent of the slider. The slide fastener also includes a terminal latch member mounted on the fastener element rows at their upper end for letting the slider move therebeyond and coupling the respective one ends of the fastener element rows to each other to thus maintaining the fastener element rows into interdigitating engagement with each other.
Patent CA-2099679-C (CA)
Title: Process for de-inking recycled paper pulp
Inventor: HACHE MAURICE
IPC: D21C9/10
Filed: 1993-06-29
Granted: 1997-06-03
Abstract: Recycled paper pulp is de-inked by treating it at neutral or alkaline pH with an aqueous deinking composition comprising one or more reducing agents.  The preferred reducing agents are sodium bisulfite and sodium borohydride.  Sodium hydroxide is preferably used to give the desired pH.
Patent CA-2099750-C (CA)
Title: Process for producing polymer blends
Inventor: COUTANT WILLIAM RICHARD
IPC: B01F23/47
Filed: 1993-06-29
Granted: 1996-05-07
Abstract: A process is provided for melt blending polymers comprising mixing a high molecular weight polymer and a low molecular weight polymer in two stages.  The two stage process extends the range of the molecular weight of polymers which can be employed and the range of the ratio of the compositions that can be effectively blended.
Patent CA-2106988-C (CA)
Title: Rotary disc filtration device
Inventor: ROLCHIGO PHILIP M
IPC: B01D65/08
Filed: 1992-05-28
Granted: 1999-06-22
Abstract: A rotary disc filtration device (30 in fig. 12) having a fluid filtration gap (56 in fig. 14) between a filtration surface (62) and a disc (36) is disclosed. The disc (36) and/or filter (34) has one or more spiral grooves (52) in fluid communication with fluid in the gap (56). The disc (36) and/or filter (34) is rotated and one or both may be axially oscillated and/or vibrated to create the shear at the filter surface (62) that increases permeate flux through the filter (34). Several discs (36 in fig. 24) and filters (34) may be interleaved to increase filtration device capacity and make more efficient use of equipment space. In such a device (106), the discs (36) can be mounted on a common shaft (104 in fig. 25) for rotation in unison and can have spiral grooves (52) on both major faces (132, 134) of each disc (36). The filters (34) are held stationary in that device (106) and are fluidly connected to facilitate collection of the permeate.
Patent CA-2107525-C (CA)
Title: Method and apparatus for acoustic examination using time reversal
Inventor: FINK MATHIAS
IPC: G01S15/88
Filed: 1993-10-01
Granted: 2004-04-06
Abstract: A method for acoustic examination of a medium and detection of reflective targets includes a preliminary step of injecting a divergent sound beam into the medium from at least one transducer. Then the echo signals reflected by the medium and received by several transducers in an array are picked up. A time gate is used to select echoes coming from a particular zone of the medium. The echoes are stored, time-reversed and re-emitted. The signals newly reflected by the medium are stored and the time-reversal operation is repeated. After a final time reversal of rank 2n+1 (where n is a positive non-zero integer) over the full depth of the measurement time gate, the characteristics of the wavefront passing closest to the maxima of said signals are determined, advantageously in the form of a time distribution of the maxima. The characteristics can often be approximated with a polynomial law. An apparatus is disclosed for implementing the method.
Patent CA-2108692-C (CA)
Inventor: MICHEL PETER
IPC: A61J7/04
Filed: 1993-02-12
Granted: 2005-07-26
Abstract: Described is a display for a medical injector in which the injection dose can be pre-selected by turning a control knob and subsequently injected by moving the knob longitudinally. Resting against the control knob in the injector are switching means, which actuate switches whose positions are transmitted to a circuit board. By virtue of the organization of the circuit board, which conveniently includes a processor, values such as the injection dose selected, the total dose already injected, etc., plus operating-status signals are output to a display unit.
Patent CA-2110380-C (CA)
Inventor: GIBBS REBECCA COPENHAVER
IPC: A61B17/221
Filed: 1992-06-16
Granted: 1999-01-12
Abstract: Disclosed herein is an endoscopic extraction device which retains its operative usefulness for longer periods of time, and therefore needs to be replaced less frequently, This extended instrument life is accomplished through the use of a composite wire construction, which includes an inner monofilament wire (I l) of nitinol material surrounded by six stranded stainless steel wires (12a-f). A wire construction in which a nitinol wire (21) is surrounded by five stranded stainless steel wires (22a-e) is also disclosed. After constructing a wire basket in the normal manner using this material, heat is applied to the formed basket in its preformed shape to set the memory characteristics of the inner nitinol core.
Patent CA-2112758-C (CA)
Title: Data communication system
Inventor: HAYASHI KATSUHIKO
IPC: H04N1/333
Filed: 1994-01-04
Granted: 1999-07-06
Abstract: In order to combine an ARQ system and an FEC system, an error correction code is inserted between an error detection code for a variable-length ARQ frame and a frame boundary flag pattern.  Information to be transmitted is divided into blocks having a suitable length by a block divider in accordance with a line quality judged by-a line quality judger, and then subjected to a framing operation by an information frame preparer.  The information subjected to the framing operation is attached with a CRC code by a CRC code generation/application circuit, subjected by a zero insertion circuit to an insertion of a suitable number of zero bits therein to provide a distinguished frame boundary with a flag, and then transmitted.
Patent CA-2117328-C (CA)
Inventor: LYNUM STEINAR
IPC: H05H1/34
Filed: 1992-12-11
Granted: 1999-06-01
Abstract: In a plasma torch (I) which consists of two or more tubular electrodes (2, 3) which are located coaxially inside one another and are designed for chemical tre atment of the reactant, a lead-in tube (4) for supply of reactant is located coaxially in the internal electrode (3) and consists of a liquid-cooled tube provided with a heat -insulating layer (10, 11) on the outer surface. Furthermore the lead-in tube (4) can be mov ed in the axial direction for positioning of the nozzle in relation to the plasma flame. T he lower part of the lead-in tube (4) is exposed to high temperature which can lead to er osion and lacerations, and this part is therefore provided so as to be replaceable. Mo reover the tube can be provided with a narrowing in the outlet opening in the form of a venturi nozzle, in order to increase the exit velocity of the reactant. Between the lead -in tube and the internal electrode an annular passage is formed into which plasma-formin g gas (13) can be introduced. The plasma-forming gas (13) which flows along the lead-i n tube will simultaneously cool it.
Patent CA-2120217-C (CA)
Inventor: YOSHIDA YUTAKA
IPC: B65G43/10
Filed: 1994-03-29
Granted: 1999-02-16
Abstract: A main conveyer structure 3 incorporates a controller 40 having function to control rotation of conveyer rollers 2.          The controller 40 incorporates a plurality of I/O ports 42 for exchanging data signal with respective controllers 40 of conveyer units 1 adjoining in four directions.  The I/O ports 42 stores the numbers registered for respective conveyer units 1 in the course of transmitting and receiving the registerable number to and from the controller 42, and then, based on the registered numbers stored in the I/O ports 42, the controller 40 prepares a table for designating direction of driving respective conveyer units 1.  By referring to the prepared table designating registered numbers of the start conveyer unit 1 and the destination conveyer unit 1, the controller 40 correctly determines the direction of driving the rollers 2 based on data for conveyance yielded from the table.
Patent CA-2122040-C (CA)
Inventor: KUHNS RICHARD L
IPC: E04D13/076
Filed: 1992-10-20
Granted: 2004-03-16
Abstract: A covering and protector having a unitary sheet including an extended flat portion which does not contain any apertures therein which functions as a closed top portion (1) for covering the open top of the existing gutter (6) and which also serves to interfit under and between existing roofing materials (12) to provide for secure fastening to the roof as well as to provide an unin-terrupted smooth path for rainwater to travel off the roof (12). The top portion is connected to an apertured portion (26) contain-ing a number of apertures (10) each with a flap for directing rain into the surface of the gutter. A lip portion (16), extending from the edge of the apertured portion, interfits beneath the upper lip (20) of the front wall of the existing gutter and serves both to close the gutter at its front wall (4) and to provide a surface for fastening the cover invention to the existing rain gutter.
Patent CA-2126380-C (CA)
Title: Minimum error rate training of combined string models
Inventor: CHOU WU
IPC: G10L15/06
Filed: 1994-06-21
Granted: 1998-07-07
Abstract: A  method of making a speech recognition model database is disclosed. The database is formed based on a training string utterance signal and a plurality of sets of current speech recognition models. The sets of current speech recognition models may include acoustic models, language models, and other knowledge sources. In accordance with an illustrative embodiment of the invention, a set of confusable string models is generated, each confusable string model comprising speech recognition models from two or more sets of speech recognition models (such as acoustic and language models). A first scoring signal is generated based on the training string utterance signal and a string model for that utterance, wherein the string model for the utterance comprises speech recognition models from two or more sets of speech recognition models. One or more second scoring signals are also generated, wherein a second scoring signal is based on the training string utterance signal and a confusable string model. A misrecognition signal is generated based on the first scoring signal and the one or more second scoring signals. Current speech recognition models are modified, based on the misrecognition signal to increase the probability that a correct string model will have a rank order higher than other confusable string models. The confusable string models comprise N-best word string models. The first recognizer scoring signal reflects a measure of similarity between the training string utterance signal and the string model for that utterance. The second recognizer scoring signal reflects a measure of similarity between the training string utterance signal and a confusable string model. The misrecognition signal reflects a difference of the first scoring signal and a combination of one or more second scoring signals. The modification of current speech recognition models is accomplished by generating a recognition model modification signal according to a gradient of a function, which function reflects a recognizer score of a training string utterance based on a string model for that utterance and one or more recognizer scores of the training string utterance based on one or more confusable string models.
Patent CA-2127528-C (CA)
Inventor: OKADA YOSUKE
IPC: A61M25/06
Filed: 1993-01-05
Granted: 2003-12-30
Abstract: A catheter introducer (31) which allows a dilator section (33) and a sheath section (32) to be engaged with and disengaged from each other promptly and smoothly. The catheter introducer (31) is composed of a sheath section (32) consisting of a sheath (35) and a sheath hub (34) and a dilator section (33) consisting of a dilator (38) and a dilator hub (36). The dilator hub (36) in-cludes a flange (37) to cover the end of said sheath hub (34) in the state of engagement formed at the distal end of the dilator hub (36), a circular groove (40) formed in the internal circular portion of the flange (37) or in the external circular portion of the sheath hub (34), and a protrusion (39) to be engaged with said groove wherein the protrusion is formed on the external circular portion of the sheath hub or on the internal circular portion of the flange.
Patent CA-2130778-C (CA)
Inventor: LIM SEUNG-HYUN
IPC: A61F2/26
Filed: 1994-08-24
Granted: 1999-01-05
Abstract: The present  invention relates to  a penile elevator for treatment of a  patient suffering from  erectile impotence, when the penile elevator according to the present invention is surgically implanted under the skin of the lower abdomen and the penis,  the patient  suffering  from  the  erectile impotence may easily perform the act of sexual intercourse, and more particularly, the penile elevator according to the present   invention can  easily  slide  according  to the expansion or shrinkage  of the penis to thereby be expanded or shrunk, and at the same  time, the same  is bendable to thereby render a patient no problem in his everyday life.
Patent CA-2133137-C (CA)
Inventor: HOEFER WAYNE A
IPC: B60N2/38
Filed: 1994-09-28
Granted: 1998-06-09
Abstract: A folding auxiliary seat assembly for a tractor cab includes a brace plate pivotally connected to interior structure of the cab, a main cushion hingedly connected to the brace plate, and an outer cushion hingedly connected to the main cushion. A latch pawl extending from the brace plate cooperates with a spring latch on a side wall of the interior structure to latch the assembly in a retracted position. In the retracted position, the outer cushion is folded beneath the main cushion, and the brace plate is pivoted to a vertical position. The main cushion has retainer sockets formed on an under side thereof which are positioned to receive retainer pins mounted on a top wall of the interior structure when the seat assembly is in a deployed position.  In the deployed position, the outer cushion is folded out to a coplanar relationship with the main cushion, and the brace plate is angled away from the side wall of the supporting interior structure.
Patent CA-2135500-C (CA)
Inventor: NAGAISHI TATSUOKI
IPC: H01L39/24
Filed: 1994-11-09
Granted: 2000-05-02
Abstract: The present invention relates to a method for forming a step on a deposition surface of a substrate for depositing a thin film on it. The method comprises steps of etching a portion of the deposition surface of the substrate and conducting heat treatment of the substrate so as to recover crystallinity of the etched surface. The method can comprise steps of etching a portion of the deposition surface of the substrate and further etching the etched portion of the deposition surface of the substrate slightly so as to remove a degraded surface.
Patent CA-2144335-C (CA)
Title: Pit detector and method
Inventor: ROGERS JOHN E
IPC: G01N33/02
Filed: 1993-09-10
Granted: 2004-07-13
Abstract: A method and apparatus for detecting the presence of an impurity within a substantially spherical object, such as piece of stone fruit. An infrared point source light emitting diode (32) positioned on one side of an inspection zone (24) transmits a single light beam across the inspection zone (24). A linear CCD array (44) for generating a signal that is proportional to the intensity of the light transmitted through the fruit as the fruit passes through the inspection zone (24) and a slit lens for focussing the light beam on the the CCD array (44) are provided. An infrared filter (42) is positioned between the lens (40) and the CCD array (44). Thus, as the fruit passes through the inspection zone (24) and the intensity of the light transmitted through the fruit is received by the CCD array (44), a two-dimensional analyzable bit map representative of the cross-section of the object's density is produced.